How severe is CVE-2020-24612?

CVE-2020-24612 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-24612 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24612?

CVE-2020-24612 affects Fedoraproject Selinux-policy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24612?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-24612 published?

CVE-2020-24612 was published on 2020-08-24 and last updated on 2026-06-17.

CVE-2020-24612

CVE-2020-24612 is a medium-severity vulnerability in Fedoraproject Selinux-policy with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 1.9
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Fedoraproject Selinux-policy
Published: 2020-08-24
Last modified: 2026-06-17

Description

An issue was discovered in the selinux-policy (aka Reference Policy) package 3.14 through 2020-08-24 because the .config/Yubico directory is mishandled. Consequently, when SELinux is in enforced mode, pam-u2f is not allowed to read the user's U2F configuration file. If configured with the nouserok option (the default when configured by the authselect tool), and that file cannot be read, the second factor is disabled. An attacker with only the knowledge of the password can then log in, bypassing 2FA.

Frequently asked questions

What is CVE-2020-24612?: An issue was discovered in the selinux-policy (aka Reference Policy) package 3.14 through 2020-08-24 because the .config/Yubico directory is mishandled. Consequently, when SELinux is in enforced mode, pam-u2f is not allowed to read the user's U2F configuration file. If configured with the nouserok option (the default when configured by the authselect tool), and that file cannot be read, the second factor is disabled. An attacker with only the knowledge of the password can then log in, bypassing 2FA.
How severe is CVE-2020-24612?: CVE-2020-24612 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-24612 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24612?: CVE-2020-24612 affects Fedoraproject Selinux-policy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24612?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-24612 published?: CVE-2020-24612 was published on 2020-08-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fedoraproject:selinux-policy:*:*:*:*:*:*:*:*

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